Barium Titanate-Based Magnetoelectric Nanocomposites

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dc.contributor.authorYang, Yaodongen
dc.contributor.committeechairViehland, Dwight D.en
dc.contributor.committeememberLi, Jie-Fangen
dc.contributor.committeememberPriya, Shashanken
dc.contributor.committeememberAbiade, Jeremiah T.en
dc.contributor.departmentMaterials Science and Engineeringen
dc.date.accessioned2014-03-14T21:15:11Zen
dc.date.adate2011-07-28en
dc.date.available2014-03-14T21:15:11Zen
dc.date.issued2011-06-21en
dc.date.rdate2011-07-28en
dc.date.sdate2011-06-21en
dc.description.abstractBarium Titanate (BaTiO3 or BTO) has attracted an ever increasing research interest because of its wide range of potential applications. Nano-sized or nanostructured BTO has found applications in new, useful smart devices, such as sensors and piezoelectric devices. Not only limited to one material, multi-layers or multi-phases can lead to multifunctional applications; for example, nanocomposites can be fabricated with ferrite or metal phase with BTO. In this study, I synthesized various BTO-ferrites, ranging from nanoparticles, nanowires to thin films. BTO-ferrite coaxial nanotubes, BTO-ferrite self-assemble thin films, and BTO single phase films were prepared by pulsed laser deposition (PLD) and sol-gel process. BTO-ferrite nanocomposites were grown by solid state reaction. Furthermore, BTO-metal nanostructures were also synthesized by solid state reaction under hydrogen gas which gave us a great inspiration to fabricate metal-ceramic composites. To understand the relationship between metal and BTO ceramic phase, I also deposited BTO film on Au buffered substrates. A metal layer can affect the grain size and orientation in BTO film which can further help us to control the distribution of dielectric properties of BTO films. After obtaining different nanomaterials, I am interested in the applications of these materials. Recently, many interesting electric devices are developed based on nanotechnology, e.g.: memristor. Memristor is a resistor with memory, which is very important in the computer memory. I believe these newly-synthesized BTO based nanostructures are useful for development of memristor, sensors and other devices to fit increasing needs.en
dc.description.degreePh. D.en
dc.identifier.otheretd-06212011-135610en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-06212011-135610/en
dc.identifier.urihttp://hdl.handle.net/10919/38666en
dc.publisherVirginia Techen
dc.relation.haspartYANG_Y_D_2011.pdfen
dc.relation.haspartYANG_Y_D_2011_Copyright.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectmetal-ceramicen
dc.subjectBarium Titanateen
dc.subjectferroelectricen
dc.subjectpiezoelectricen
dc.subjectmultiferroicen
dc.subjectself-assembleen
dc.subjectmagnetoelectricen
dc.subjectnanocompositeen
dc.subjectnanoroden
dc.subjectthin filmen
dc.subjectpulsed laser depositionen
dc.titleBarium Titanate-Based Magnetoelectric Nanocompositesen
dc.typeDissertationen
thesis.degree.disciplineMaterials Science and Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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